Airline check-in guide
Allegiant Air check-in: cutoffs, carry-on rules, and bag fees
Check in online 24 hours before departure and be through airport check-in by Allegiant Air's cutoff of 45 minutes before departure on domestic flights. Bag-drop closes 1 hour before departure (no more than 2 hours before) — miss that window and your bag may not make the plane even if you do.
Looking for oversize fees, sports equipment, or stroller policy? See the full Allegiant Air baggage guide.
When does Allegiant Air open online check-in?
Allegiant Air opens online check-in 24 hours before departure and closes it 45 minutes before departure. The moment the window opens today, check in — you lock in your seat, skip the ticket-counter queue, and have your boarding pass on your phone before you leave home.
What is Allegiant Air's airport check-in cutoff?
| Flight type | Check-in closes | Bag drop closes |
|---|---|---|
| Domestic | 45 minutes before departure | 1 hour before departure (no more than 2 hours before) |
| International | 45 minutes before departure (no separate international policy stated) | 1 hour before departure (no separate international policy stated) |
These are hard deadlines — Allegiant Air can give your seat to a standby traveler once the cutoff passes. Arrive with room to breathe, not at the last second.
Can I bring a carry-on on Allegiant Air?
On Allegiant Air's basic fare, a carry-on is not included — it costs $10 to $75 (varies by route and when purchased; lowest pre-purchase online, highest at gate). A personal item also runs free. Maximum carry-on size: 10 x 16 x 22 in (25 x 40 x 55 cm).
Packing to a personal item only saves the fee and keeps your Leave-By Time shorter — no counter stop needed.
How much does Allegiant Air charge for checked bags?
| Bag | Main cabin | Basic economy |
|---|---|---|
| 1st checked bag | Varies by route; use allegiantair.com baggage calculator (no published flat fee) | Varies by route; use allegiantair.com baggage calculator (fully a-la-carte model) |
| 2nd checked bag | Varies by route; up to 4 checked bags allowed per passenger | Varies by route; up to 4 checked bags allowed per passenger |
Prices shown are for online prepayment. Paying at the airport or the gate runs higher. Baggage fees compared across every airline shows how Allegiant Air stacks up against the rest.
How does a bag fee change my Leave-By Time?
Checking a bag adds 5 to 10 minutes at the counter — time in line, handing off the bag, collecting a receipt. That window sits between your arrival at the terminal and your walk to security, so it shifts your Leave-By Time at home earlier, not just your airport arrival.
Recompute your Leave-By Time with bag drop factored in — enter your flight, mark that you are checking a bag, and the calculator adds the counter time so you leave home with exact numbers, not a guess.
Things to know before you fly Allegiant Air
- Fully a-la-carte model: base fare covers only the seat — carry-on and checked bag fees always apply and vary by route and when purchased (pre-purchase online is cheapest; gate fees are highest at $50 to $75).
- Allways Rewards Visa cardholders receive complimentary priority check-in and boarding plus one free drink onboard.
- Allegiant is primarily a domestic US carrier flying smaller regional airports; no distinct basic vs. standard fare tiers, so no separate basic economy baggage rules.
Related guides
Verified against Allegiant Air's official site, . Sources: allegiantair.com — check in; allegiantair.com — baggage fees; allegiantair.com — optional services fees.